<template>
  <div class="app-container">
    <upload-excel-component :on-success="handleSuccess" :before-upload="beforeUpload"/>
    <el-table :data="tableData" border highlight-current-row style="width: 100%;margin-top:20px;">
      <el-table-column v-for="item of tableHeader" :prop="item" :label="item" :key="item"/>
    </el-table>
    <el-row type="flex" justify="end" class="pdt15">
      <el-button type="primary" @click="reset">撤销</el-button>
      <el-button type="primary" @click="upload">确认3上传</el-button>
    </el-row>
  </div>
</template>

<script>
import UploadExcelComponent from '@/components/UploadExcel/index.vue'

export default {
  name: 'UploadExcel',
  components: { UploadExcelComponent },
  data() {
    return {
      tableData: [],
      tableHeader: [],
      file: null
    }
  },
  methods: {
    reset() {
      this.tableData = []
      this.tableHeader = []
    },
    upload() {

    },
    beforeUpload(file) {
      console.log(file)
      this.file = file
      console.log(this.file)
      const isLt1M = file.size / 1024 / 1024 < 1

      if (isLt1M) {
        return true
      }

      this.$message({
        message: 'Please do not upload files larger than 1m in size.',
        type: 'warning'
      })
      return false
    },
    handleSuccess({ results, header }) {
      this.tableData = results.filter((item, index) => {
        return index < 3
      })
      this.tableHeader = header
    }
  }
}
</script>
